Document Type and Number:
Japanese Patent JPS54161123
Kind Code:
U
Application Number:
JP5901578U
Publication Date:
November 10, 1979
Filing Date:
April 28, 1978
Export Citation:
International Classes:
G11B33/04; G12B9/00; G12B9/04; (IPC1-7): G11B1/00; G12B9/00